Sharpening or honing apparatus for razor blades



G. BARSCH April 9, 1935.

SHARPENING OR HONING APPARATUS FOR RAZOR BLADES Filed Aug. '7, less 2Sheets-Sheet 1 April 9, 1935. BARSCH 1,997,508

SHARPENING OR HONING APPARATUS FOR RAZOR BLADES Filed Aug. 7, 1935 2Sheets-Sheet 2 I I I 79312.9 4

7 obtained. A

two turning positions. V

Patented Apr. 9, 1935 UNITED sTATEs' R ATENT OFFICE Application August7, 1933, {Serial No. 684,069

InGermany Augustll, 1 932 10 Claims.

The present'invention relatesto a sharpening or honing apparatus fortwo-edged razor blades, inwnich the blades are arranged on a rockingblade-holder and "are operated upon on bothsides by sharpening membersprovidedon rocking levers. The invention has for its object to provide asharpening device which, while be ing simple and cheap to manufacture,of comparatively small size and simple to manipulate, enables; aparticularly rapid and satisfactory sharpening ormhoning of the razorblades" to be According to the present invention the blade holderstandsl under the influence of a spring pressing against a lateral lugor extension on the blade holderwhich spring after movement of the bladeholderfrom one alternative angular position to another has beeninitiated suddenly tilts. the blade-holder to complete such movement andresiliently maintains the holder and blade in its alternative positionsso as to afford a resilient engagement between the blade and saidsharpening members' The invention is more particularly described withreference to the accompanying drawings, in

which:

Figure l is a view of the interior of the sharpening apparatus after theremoval of the casing cover. The opening provided in this latter forinserting and removing the blades, and the guide-slot for the handleserving for the movement of the rocking levers, are, however, indicatedin broken lines. The rocking levers are shown shortly before reachingtheir left hand end position.

Figure 2 is a sideelevation of the rocking blade-holder alone. l i I inFigure 3 shows a link adapted for connecting the rocking levers andfitted with a handle, the rocking levers being omitted. Figure 4 is aview of the inside of a sharpen-- ing device similar to Figure 1, inwhich the hones or whet-stones are spring-mounted on the rocking lever.V Figure 5 isla plan view of one of the two rocking levers, after theremoval of the spring mounted hone.

Figure 6 is a longitudinal section through. the

rocking lever on the line C-D of Figure .5..-

Figure '7 is an end elevation of a rocking lever with a "hone orwhet-stone in position.

Figures 8 and 9 show the blade-holder cross-section on the line AB ofFigure 4 in the The sharpening and hoping: apparatus isgar-i ranged inacasing I, preferably of metal, having; a removable cover IS Thesharpening members 2 which preferably consist of hones or whet-stones,are arranged on the inner side of two] oscillating or rocking leversA,movable. 5 to and fro onbothsides of the blade 3. The os-. .cillating orroc king levers [are connected by a'link 5, thehandle 6 of which ismovable in a guide-slot I inlthe cover. l.6,indicated in dotted linesin'Figs. 1 and 4. The fulcra of the oscillating or rocking levers, formedby pins 8 on the casing bottom I, are arranged in such a way, that thesharpening members 2 have oscillatory movement in paths disposedobliquely to the edges 9 of the blade 3 on the mutual rocking of thelevers! by to-and-frofmovement ofthe handle 6 while their sharpeningpaths intersect eachother and the edges 9 of the blade 3, rockedon'eachstrokeof the levers 4, are operated upon oni'both sides by thesharpening members 2, and in fact in opposite directions to. each other.V p

[The rocking blade-holder I0 accordingto the invention is pivoted at itsendsin opposite walls of the casing and is under the influence ofaspring I H, which resiliently presses the. blade 3 on the hones 2during the sharpening, The spring I! completes the movement of theblade-holder Ill from one of its positions. to the other after itsturning movement has beeninitiated. To initiate the turning movement of,the blade-holder it after each stroke of the rocking levers 4, the bladeholder 10, which as shown in Figure 1 is accessible through an opening Hin the casing cover l6 for securing the blade'3,'has tongues l2and I3,bent if desired out of the sheet metal of the holder Land directed atthe ends in different direc tions, namely obliquely upwards andobliquely downwards which alternatively initiate the rocking movement ofthe holder I0 and thus of the. clamped'blade 3 throughengagement by therockg ing levers 4 or by projections or cams l4 and I5, provided onthe'rocking levers. After passing its" mid angular position, asudden'tilting of the blade-holder I0 is effected into the respectiveangular positions by the action of the spring jll. The spring I! bearsat one end against a lug 29 of the blade-holder!!! having a cross-bar"l9, and at'itsother end against anebutment m on the casing l, and inthe examples of construction il-- lustrated'is carried by a-push-rod 3B,which at one endistonnecte'd with the cross-bar or pivot l9 on thelug'29 in the manner of a knee-joint, while the other" end projectsfreelyi through the abutment I8. The-spring H, which effects the sudden55 gular positions after passing the middle position, has the furtherfunction of holding the bladeof the blade 3.

holder resiliently in the two turning positions,

. that is to say, to: press resiliently the edges 9 of the blade on thehones 2 during the sharpening The tongues I2 and I3 of the blade-holderID are of such length in the example shown in Figures l and 2, that theylimit the rocking move ment of the blade-holder l9 and the blade 3 bystriking against the bottom I and the cover US of the'casing. Instead ofusing the tongues l2 and i3 as stops for limiting theumovem'ent of theblade-holder I0, projections 31, iii-directed to opposite sides mayalsobe provided as shown in Figures 8 and 9, on the push-rod 3!) serving forthe mounting of the spring 51, at theknee-joint l9 or in its proximity.These projections limit the rocking movement of the blade-holder ID bycoming in'contact with the bottom .I and cover IQ of the casing. 1

The tongues l2 and I3 onthe blade-holder l 7 and the projections or camsi4 and iii of the rocking levers. 4 cooperating with them are asso,ciated with one another infsuch a way that the edges 9, of the blade 3.'are honed in an outward direction that is to, say; away from the edgesof the blade. By shifting the projections or cams l4 and I5 'to'theopposite. sideof the levers 4, and by a suitably differentbending ofthe tongues i2 and-l3 of the blade h'old'er, the result can be ob.-tained that the edges. 9- of the blade are sharpened from outwards, toinwards or towards thefedges of the blade.

In additionto. the resilient mounting of the blade-holder loin thetwoturning positions under the action of the spring I1 the hones are asshown inFigures 4 to '7 also spring-mounted in the rocking levers,whereby the advantage is obtained that in, all cases, the hones. 2.apply themselves gently to the edges 9, even with somewhat curvedblades, and produce a satisfactory, sharpening. Further, injury andcutting of the bones or whetstones Z -as. well as. damage'to the bladeedges 9, more particularly on engagement of the hones on the corners. ofthe blades are avoided. The

spring-mounting of, the hones 2 on the rocking.

levers is so performed that the hon'es are resilient so that they can bedepressed as a'whole as well as at either of both ends. alone. Thesprings 38 which influence the hones 2 act on separate holders 33, whichare mounted on the. rocking levers 4. The springs 38 are preferablyarranged between the holder 33 and the rocking lever, and

'in' the construction shown are formed by stamped-out and bent tongueswhich are formed from the material of the holders 33 themselves,

7 forinstance sheet steel. The holders 33embrace the hones 2 on the twoends thereof with bent up tongues 34 and 35, and are securedagainstlongitudinal displacement by stops on the levers;

The securing. against longitudinal displacement V is effected in onedirection by two stop tongues 36 011 the rocking lever 4flaterallyembracing the 'hones' 2 andbearing on the tongues 35 of the holder. 33,,and in the other direction'by the bearing of the sheet metal holder withthe free end of one spring 38 against stop 3't'provided on the bottom ofthe rocking; lever A. The tongues 36 and I 5 of the rockinglever 4laterallyenibracmeme hone at the same time limit theflift of the springs38 and thus of the; hones. 2.

22 (Figure 2) height that the hone, which is preferably roofshaped orV-shaped in profile, can be easily changed when required. For thispurpose, it is simply necessary to depress the hone 2 at the innor endand then push it outwards and it then slides overthe obtusely benttongue 34 of the holder 33 and thus can be withdrawn from this latterand from therocking lever 4.

The strength'of the springs 38 is preferably "less than that of thespring H which tips the blade-holder iii in the turning positions andpresses the blade 3 on the hones 2, whereby a of the blade-holder l9formsits one bearing pin and projects with the end 24 beyond the sidewall of thecasing, (Figsl land 4), sothat the ad.-, justment of the stud'ifi necessary forthe insertion and removal of thelblade 3' can beobtained in aparticularly simple way from the outside of the casingbypressing on the end '24, which is formed'as a knob of the displaceableholder 23. The rocking levers 4 and their link 5 may also bespring-mounted as, well as 'the ,bladeholder It! and the homes 2.Accordingto Figure I 3, the pivots providedb'etween therocking levers 4and the link 5 are under the. action of springs are fitted in bearingbushes 2'! of the link; 5 which are insertedion the pins 28 of therocking levers 4, which are not shown in, Fig. 3.

I claim: I i I 1. A sharpening orhoning apparatus for two edged razorblades comprising a pairof oscillatory honing tools, said toolsoscillating in planes faces of the blade held in said, holder to. the

action of said honing tools, said hon ng tools being adapted to engagealternately and simultaneously on opposite sides of said blade, and

resilient means for completing said angular dis placement of said bladeholderv from one alternative position to the other and for resilientlymaintaining the blade holder in either of its. alternative angularpositions with the. opposite faces of '25, which presstherocking'leversil and the link" 5 provided with slide-shoes 26 againstthe bottorri 'I and the cover !6 of the casing; "The springs the edgesof the blade respectively operatively 7 presented to. the respectivehoning tools.

.2. A sharpening orhoning apparatus for twoedged razor blades comprisinga rockable blade holder having tongues sloping in different, directionstherefrom, a pair of oscillatory honing toolsadapted to engagesimultaneously on opposite sides and alternately the respective edgesurfaces of a blade held in said holder, means associated with saidtoolsfor periodically-initiating movement of the blade holder from' cneangular position to the other. during the operation of the tools, 7

to. present alternate edge surfaces on opposite faces of said blade tothe actionof said tools and means for completing suchmovement and for1,997,508 resiliently maintaining the blade holder in either of itsalternative angular operative positions. 3. A sharpening or honingapparatus "for twoedged razor blades comprising a casinghaving sidewalls, base and cover, spaced pivots on said the blade holder, a pushrod slidably supported at one end by the casing, and pivotally connectedat its other end to said lug and a compression spring on said pushrod-adapted to complete the angular displacement of the lug and bladeholder from one alternative angular position to the other afterinitiation of such angular movement by engagement of a lever with one ofsaid tongues.

4. A sharpening or honing apparatus for twoedged razor blades comprisinga casing having side walls, base and cover, spaced pivots on said,

base, a pair of rockable levers mounted on said pivots, a rockable bladeholder pivotally supported by opposite walls of said casing and locatedbetween said levers and having tongues sloping in difierent directionstherefrom for respectiveengagement by said leversj to initiate angulardisplacement of the blade holder from one alternative angular positionto another, sharpening members on said levers adapted to engage on ablade secured to said holder, a lug extending from i the blade holder, apush rod slidably supported at one end by the casing and pivotallyconnected at its other end to said lug and a compression spring on saidpush rod abutting at one end against the casing and adapted to completethe" angular displacement of the lug and blade holder from onealternative angular position to the other after initiation of suchangular movement by engagement of a lever with one of said tongues, saidpush rod having a transverse abutment at its end adjacent the lug forengagement with one end of said spring, the opposite ends of saidabutment being adapted for engagement respectively with the cover andbase of the casing for locating the blade holder inits alternativeangular positions. v i

5. A sharpening or honing apparatus for twoedged razor blades comprisinga casing having side walls, base and cover, spaced pivots on said base,a pair of rockable levers mounted on said pivots, a rockable bladeholder pivotally supported by opposite Walls of said casing and havingtongues sloping in different directions therefrom for respectiveengagement by said levers to initiate angular displacement of the holderfrom one alternative angular positionto another, sharpening members onsaid levers adapted to engage,

on opposite sides of a blade secured to said holder,

- a spring located between the holder and the casing adapted to completethe angular displacement of the blade holder and resiliently tomaintainthe holder in its respective positions to aiford resilient engagementbetween the blade and the sharpening members, holders for saidsharpening members mounted on said levers and having resilient tonguesextending therefrom and bearing against said levers towards both ends ofthe sharpening members for resiliently suspending the said membersespecially in their longitudinal ening members and to ensure theiradaptiveness to any position of the razorbladel' i 6. In a sharpening orhoning apparatus for two-edged razor blades *as claimed in'claim 5',benttongues extending from each lever fbrltrans verse" engagement aroundthe hone to limit out warddisplacement of the hone away fro-m thelever'and relatively-shallow end lugs on each of thehone holders bent atan'obtuseangle to the base of the'holder to enable the hone to bewithdrawnfrom the outer end of the lever and holder by depressinga'ndpushing outwardly the inner end of: the hone. blade secured to saidholder, a lug extending from s L;

7: A" sharpening orhoning apparatus for twoe'dged ,razor bladescomprising a casing having side walls, base and cover, spaced pivots onsaid middle line to regulate the pressure of the sharpbase, a pair ofrockable levers mounted on said N pivots, a pin on each of said levers,a connecting link between said levers, a socket at each end ofsaid linkfor engagement on said pins, a spring in each of said sockets, a manualoperating member on said connecting link, shoes on said link for slidingengagement with base and cover of the casing, a rockable blade holderpivotally sup: ported by opposite walls of said casing and locatedbetween said levers and having tongues V sloping in diiferent directionstherefrom for respective engagement by said levers to initiate angulardisplacement of the holder from one alternative angular position toanother, sharpening members on said levers adapted to engage on oppositesides of a blade secured to said holder and a spring located between theholder and the casing adapted to complete the angular displacement ofthe blade holder.

8. A honing apparatus for two-edged razor blades comprising a casinghaving side walls, a base and cover spaced pivots on said base, a pairof oscillatory honing tools respectively pivotally mounted onsaid-pivots, a-rockable blade holder pivotally supported by and betweensaid side walls and having tongues extending in diflerent directions forrespective engagement by said tools to initiate angular displacement ofsaid holder from one alternative angular position to the other, andresilient means for completing such alternative rocking movements tosuch operative angularpositions wherein alternate surface edges of theblade are presented to the action of the honing tools.

9. A honing apparatus for two-edged razor of oscillatory bladescomprising a support, a pair honing tools pivotally mounted on saidsupport, a blade holder disposed between said tools and rockably mountedin said support and adapted to i hold a razor blade with one edgesurface in contact with one of said honing tools and the oppositeinitiate a rocking movement of the holder in' one direction and theother of said tongues being engaged bythe other of said tools as thelatter approaches the final stage of its movement in the reversedirection to initiate a reverse rocking movement of the holder, andresilient means for completing such alternate rocking movements of saidholder and for yieldingly and simultaneously pressing the respectiveedge surfaces of the blade held in said holder in opposite directionsagainst theopposedfaces of the oppositely'moving oscillatory honingtools while the latter are in con- .tact with said surfaces.

,l0. A honing apparatus for two-edged razor blades comprising a support,a pair of oscillatory honing tools'pivotally mounted on said support, ablade holder disposed between said: tools and rockably mounted in saidsupport and adapted-to hold a razor bladewith one edge surface incontact with one of said honing tools and the opposite surface of theother edge simultaneously in contact with the other of said honingtools, the free end portions of said tools andthe end portions of saidholder being so formed and-related that as one of said tools approachesthefinal stage of its movement in one direction its free end portionwill strike the cooperating end portion of the holder to initiate arocking movement of the holderin one direction and as the other of saidmovement of the holder, and resilient means for completingvsuchalternate rooking,movement of said holder and for yieldinglyandsimultaneously pressing the respectiveedge surfaces of the blade heldin said holder in opposite. directions against the opposed faces oftheoppositelymoving oscillatory honing tools while the latter are incontact with said surfaces. V

I V r GUILLAULIE BARSCH.

